In 2025, Australia’s financial markets are as dynamic as ever, with volatility at the forefront of many investors’ minds. While most are familiar with basic hedging strategies, gamma hedging is a more advanced approach that’s making waves among sophisticated traders and institutions. But what exactly is gamma hedging, why is it relevant in today’s markets, and how can Australian investors use it to their advantage?
To understand gamma hedging, it helps to first revisit the concept of options “Greeks.” In options trading, delta measures how much the price of an option is expected to move relative to the underlying asset. Gamma, meanwhile, measures the rate of change of delta—think of it as the accelerator pedal for your delta exposure.
When you own options, your delta exposure can shift rapidly as the underlying asset moves, especially during volatile periods. Gamma hedging is the process of adjusting your positions to keep delta neutral as the market shifts, reducing the risk of sudden, adverse price swings. This is particularly relevant in 2025, with the ASX experiencing sharp intraday moves amid global economic uncertainty and ongoing rate adjustments from the RBA.
The past year has seen a spike in market volatility, driven by shifting interest rates, global supply chain disruptions, and geopolitical events. The Australian Securities & Investments Commission (ASIC) recently highlighted a surge in retail options trading, and the 2025 policy landscape now features stricter margin requirements for complex derivatives. This environment means managing risk is more crucial than ever.
Consider an investor who writes (sells) call options on Commonwealth Bank (CBA) shares. If CBA’s share price rises sharply, the seller’s delta exposure can quickly become dangerously negative, leading to outsized losses. By using gamma hedging—often by dynamically buying or selling the underlying shares or additional options—the investor can keep their net delta close to zero, limiting losses even in wild markets.
Recent examples include local super funds and ETF providers employing gamma hedging to stabilise returns, especially in sectors sensitive to interest rate changes like banking and resources. As the ASX VIX (volatility index) remains elevated in 2025, these strategies are no longer reserved for Wall Street quants—they’re becoming standard for risk-aware Australian investors.
Gamma hedging isn’t just for institutional players. Sophisticated retail investors can also incorporate these strategies, especially with the growing range of derivatives and structured products available on the ASX and via online brokers.
It’s worth noting that gamma hedging can increase transaction costs due to frequent adjustments. It’s most effective in highly volatile or leveraged portfolios, or when managing large, sensitive exposures.
Gamma hedging is not a set-and-forget strategy. It requires ongoing monitoring and swift execution. Key risks include:
However, for those willing to invest the time and resources, gamma hedging offers a powerful way to navigate the unpredictable waters of 2025’s markets.
Gamma hedging is emerging as a valuable risk management technique for Australian investors navigating increased market volatility and regulatory change in 2025. Whether you’re managing your own portfolio or overseeing institutional funds, understanding how to neutralise delta exposure can help protect your investments from sudden shocks. As the ASX continues to evolve, those who master these advanced strategies will be best placed to thrive in the new financial landscape.